Hi Guys,  Started my octy II 1.6 fsi  today and straight after pulling away, engine management  start to flash and then went on permanently,  car misfires, running like a tractor, lack of power, juddering,     so i just hooked it up to a laptop and two of them came on-

 

2 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
            P0300 - 001 -
16686 - Cylinder 2
            P0302 - 001 - Misfire Detected
Readiness: 0000 0000

 

 

Looked online and lots of topics about coil packs...     in this particular case would it be just the cylinder 2(coil on 2 ) or could it be more?

 all shops closed so cannot pop in to store and get a new one today      is there anything i should be aware when changing them?   never had a chance to take any of them yet...  had an old polo before with one coil pack!

 

appreciate any info

 

 

Did you find these links?

http://wiki.ross-tech.com/wiki/index.php/16684/P0300/000768

http://wiki.ross-tech.com/wiki/index.php/16686/P0302/000770

Did you find these links?

http://wiki.ross-tech.com/wiki/index.php/16684/P0300/000768

http://wiki.ross-tech.com/wiki/index.php/16686/P0302/000770

Yeah, i did,   so many potential causes,,,        the car was perfect,  no a single misfire,     if the egr valve was found as a fault would the car juddering so much??

Had a friend with a Vauxhall with similar symptoms.

Garage diagnosed misfire and replaced coil packs twice, each time clearing fault logged.

Problem remained and it was getting expensive so I added a bottle of Redex fuel cleaner and gave it an Italian tune up for 30miles.

Hasn't missed a beat since.

Could've been partly fouled spark plug, dirty injector, egr clogged etc.

Garages are too quick to jump to conclusions based on a diagnostic scan and need to do a bit more detective work before replacing parts at cost to the customers.

Had a friend with a Vauxhall with similar symptoms.

Garage diagnosed misfire and replaced coil packs twice, each time clearing fault logged.

Problem remained and it was getting expensive so I added a bottle of Redex fuel cleaner and gave it an Italian tune up for 30miles.

Hasn't missed a beat since.

Could've been partly fouled spark plug, dirty injector, egr clogged etc.

Garages are too quick to jump to conclusions based on a diagnostic scan and need to do a bit more detective work before replacing parts at cost to the customers.

thanks for the reply matey,   i'll defo check the spark plugs too,   i filled my car at murco last week with ULSD 95,  were i always use 98  at BP,(i never use 95 in this engine, but price for 98 was unbelievable!)     just wish the shops were open here at the weekend,,, 

Just an update guys,   all sorted now,    Bought a new coil pack from eurocarparts today (13.75 each)   and just replaced number 2,  no more issues!  i bought a spare in case another one goes,,,     should they be replaced in pairs or one is good enough?   Filled up the car with BP 98 full tank and added redex as well